Lightning electricity is collected in the base of engine, transmit to tower, from the tower to the base, and by earthingpoint to earthing net.
汇集到机舱底座的雷电流，传送到塔架，由塔架本体将雷电流传输到底部，并通过接入点传输到接地网。
2
This paper presents the principle improvement of time sequence rotor one pointearthing protection.
论述了乒乓式转子一点接地保护的原理改进方案。
3
It is the key point to judge whether the earthing protective system of an elevator can he approved. Present paper analyses the working principles of three diff...